The Road goes ever on and on
Down from the door where it began.
Now far ahead the Road has gone,
And I must follow, if I can,
Pursuing it with eager feet,
Until it joins some larger way
Where many paths and errands meet.
Hobbits are not prone to adventure. In fact, they avoid it. And why shouldn’t they? The center of their world is home and hearth. Ah! That it would be so cherished in our our world today. But in the hearts of men and women – it is longed for still, and so we do not dare, like the Hobbit, venture far from home.
See the movie The Hobbit, if for no other reason than to discover the “unexpected adventure,”….to find out what it means to be “late for dinner.”
The over-arching theme of The Hobbit is this uneasy Providence. The “unexpected” trip to a perilous realm where we experience what J.R.R. Tolkien described as a Eucatastrophe. There are Orcs, Ringwraiths, Goblins, and Giants to slay. BEWARE! Lest your foot stumble and you are taken at the will of the Dragon.
The Road goes ever on and onOut from the door where it began.
Now far ahead the Road has gone,
Let others follow it who can!
Let them a journey new begin,
But I at last with weary feet
Will turn towards the lighted inn
I wish the ring had never come to me. I wish none of this had happened.
Gandalf: So do all who live to see such times, but that is not for them to decide. All we have to decide is what to do with the time that is given us.
Graced Grit 
Eucatastrophe, a word coined by Tolkien, means a sudden happy turn in the story which makes you filled with joy.
I derived this definition from Tolkien Gateway ( http://tolkiengateway.net/wiki/Eucatastrophe) who directly quoted Tolkien-
“I coined the word ‘eucatastrophe’: the sudden happy turn in a story which pierces you with a joy that brings tears (which I argued it is the highest function of fairy-stories to produce). And I was there led to the view that it produces its peculiar effect because it is a sudden glimpse of Truth, your whole nature chained in material cause and effect, the chain of death, feels a sudden relief as if a major limb out of joint had suddenly snapped back. It perceives – if the story has literary ‘truth’ on the second plane (….) – that this is indeed how things really do work in the Great World for which our nature is made. And I concluded by saying that the Resurrection was the greatest ‘eucatastrophe’ possible in the greatest Fairy Story – and produces that essential emotion: Christian joy which produces tears because it is qualitatively so like sorrow, because it comes from those places where Joy and Sorrow are at one, reconciled, as selfishness and altruism are lost in Love”. -letter 89
Primary-
(1) “ The Road goes ever on and on, down from the door where it began”
(2) “Late for dinner
(3) “But I at last with weary feet”
Secondary-
(1) “Taken at the will of the dragon”
(2) perilous realm
(3) Orcs, Ringwraiths, Giants, Goblins
Perfect MM.